19 iq] STEVENS 6- DALBY—PHYLLACHORA 59 



EXPLANATION OF PLATES Vl-VIII 



The drawings of the leaf sections were made from permanent slides by the 

 aid of the camera lucida. In general 2 figures are given to each species, a 

 habit drawing of a leaf, or portion of a leaf, and a cross-section of a leaf showing 

 ■ position of locules and clypei in relation to host tissue. 



Fig. I. — P. hanisteriae: cross-section of leaf, locules median, clypeus 

 poorly developed. 



Fig. 2. — P. banisteriae: habit sketch. 



Fig. 3. — P. bourreriae: cross-section of leaf, clypeus well developed; 

 lateral darkening indicates merely a region of denser fungous mycelium, not 

 a true clypeate structure. 



Fig. 4. — P. bourreriae: habit sketch. 



Fig. 5. — P. canafistulae: cross-section of leaf, locules not median. 



Fig. 6. — P. canafistulae: habit sketch. 



Fig. 7. — P. drypeticola: cross-section of leaf, locules not median; 2 regions 

 of conidiiferous beds shown under upper clypeus. 



Fig. 8. — P. drypeticola: habit sketch. 



Fig. 9. — P. heterotrichae: cross-section of leaf; locules numerous, deep, 

 clypei thin. 



Fig. 10. — P. heterotrichae: habit sketch. 



Fig. II. — P.engleri: habit sketch. 



Fig. 12. — P. lathyri: cross-section of leaf, locules nearer upper surface. 



Fig. 13. — P. lathyri: habit sketch. 



Fig. 14. — P. mayepeae: habit sketch. 



Fig. 15. — P. metastelmae: cross-section of leaf. 



Fig. 16. — P. metastelmae: habit sketch. 



Fig. 17. — P. rourea: cross-section of leaf, locules median, clypeus well 

 developed. 



Fig. 18. — P. rourea: habit sketch. 



Fig. 19. — P. securidacae: cross-section of leaf, locules large, median, 

 clypei weU developed and with rugose surface. 



Fig. 20. — P. securidacae: habit sketch. 



Fig. 21. — P. simplex: habit sketch. 



Fig. 22. — P. tragiae: habit sketch. 



Fig. 23. — P. nectandrae: cross-section of leaf, clypeus more prominent 

 above. 



Fig. 24. — P. nectandrae: habit sketch. 



Fig. 25. — P. ocoteicola: cross-section of leaf, locules median, clypeus 

 above and below. 



Fig. 26. — P. ocoteicola: habit sketch. 



Fig. 27. — P. gnipae: cross-section of leaf, clypei well developed above and 

 below. 



Fig. 28. — P. gnipae: habit sketch. 



